A large series of studies have aimed to demonstrate correlations between post-irradiation γ-H2AX responses and acute and late radiosensitivity, or radiation-induced cancer risk, across a large variety of cancer patient cohorts [112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128], with mixed results. Here, H2AX is linked to cancer.